3.2 Back panel (connections)
Warning! Faulty connections or short-circuits may seriously damage NEPTUNE 100.
Before attempting any connections, consult the specialized sections of this manual.
1. Antenna socket
This SO 239 socket is for connecting an appropriate antenna.
2. Power cable
This red/black cable has to be connected to a power source of 12 Vdc (red is positive).
3. Socket for additional external loudspeaker
You can use this jack for the connection to a suitable external loudspeaker (optional), if
needed.
4. GPS connector
Allows for connection to the optional receiver module “GR213” cod. C833 (or other compatible
receiver), for obtaining, viewing and transmitting (with DSC) information regarding position and
current time data.
3.3 Microphone
1 UP and DOWN buttons: These two buttons change the
tuning channel. The rst scrolls upwards through the
tuned marine channels, the second scrolls downwards.
2 Button 16: For ease of use, button 16 performs the
same function as the button 16 on the front panel of the
transceiver.
3 MENU: activates the same functions/features of the
MENU button on the front panel of the radio.
4 PTT (push to talk): Pressing this button will begin
transmission
5 Microphone: During transmission, speak a few
centimetres from the microphone.
